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CVE-2025-8889

LowPublished

Compress Then Upload < 1.0.5 - Admin+ Arbitrary File Upload

Published: Sep 9, 2025
Updated: Nov 13, 2025
Assigning CNA: WPScan
Evidence observed: Aug 8, 2026

Primary CVSS

3.8/ 10Low

nvd · CVSS 3.1

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N

EPSS probability estimate

0.3%

Low · next 30 days

Percentile: 21.4%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

Summary

The Compress & Upload WordPress plugin before 1.0.5 does not properly validate uploaded files, allowing high privilege users such as admin to upload arbitrary files on the server even when they should not be allowed to (for example in multisite setup)

Sources

CVE-2025-8889Exploit
Proof-of-concept exploit for CVE-2025-8889: arbitrary file upload to RCE in WordPress Compress Then Upload plugin 1.0.3. Includes step-by-step PoC using Burp Suite to bypass MIME validation and execute PHP code.

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